Machine eor bending



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F. SEID'LE AND SAML. EBERLY, OF MEGHANICSBURG, PENNSYLVANIA.

MACHINE FOB BENDING- WOOD.

Specification of Letters Patent No. 29,107, dated July 10, `1860.

To all whom it may concern:

Be it known that we, FREDK. SEIDLE and SAMUEL EBERLY, of Mechanicsburg,Cumberland county, State of Pennsylvania, have invented certain new anduseful Improvements in Machines for Bending VoOd, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawing, forming part of this specification, in which-Figure 1 represents a side elevation of a machine for bending wood,embracing our improvements. Fig. 2 represents an end elevation of thesame, with the form or pattern removed in order to show the manner ofits construction with the machine. Fig. 3 represents a side elevation ofthe pattern.

Our improvements in wood bending machines relate more particularly tothat class, in which a revolving pattern is used, in connection with amovable carriage.

In this class of machines as neither the bed or the pattern yield, theyare not adapted neither can they be used to bend wood into irregularshapes or curves, as all parts of the surface of the pattern, must be atthe same distance from its center of revolution.

To overcome this defect is the object of one part of our invention,which consists in the employment of a revolving yielding pressurepattern, in connection with an unyielding bed; whereby all parts of thesurface of an irregular curved pattern, as it is revolved, are caused topress with equal force on the bed and strip and bend the strip toconform to the irregularities of the surface of the pattern.

The object of another part of our invention is to so arrange theconnection between the pattern and the machine that it can be taken outand replaced with greater ease and facility than heretofore; and itconsists in connecting the pattern with a sliding frame furnished withside clips which embrace the side of the pattern, while an open slot ismade in the center of the pattern, through which the central pivotpasses and supports the pattern at that point, by which means thepattern may be removed from the slides by simply drawing it out,withoutunloosing any connecting bolts.

Our improved wood bending machine represented in the accompanyingdrawing, consists of a bed (A) to the sides of which are bolted,uprights (B) carrying a pattern 'frame This frame is pivoted to sidepieces (a) (so that it can revolve) which slide in guides between thetwo posts; and the pattern (D) is connected to the turning and slidingframe (C) by a slot (b) in its back into which, the pivot (o) enters,and is also supported by the back of the frame, and by clips (cl)extending out from its side.

Resting upon rollers on the bed, is a carriage which moves between theuprights and under the pattern, and on the under side of the carriage,is a rack into which a toothed pinion (g) that gives motion to thecarriage meshes.

A. lever pivoted to the top of the upright frame, acts on the patternframe, causing the pattern to press the strip while being bent closebetween itself and the sliding bed, and causing the strip to conform tothe irregularities in the pattern while being wrapped around it.

Motion is communicated to the carriage through a toothed pinion (it) (towhich the power is applied) which gears into a toothed wheel (z') on theend of the rack pinion shaft (7c). The strip (Z) to be bent is attachedto the pattern (D) by means of a clamp and key or by any other wellknown means, and the pattern and frame are turned, so that the end ofthe strip comes in contact with the bed and is held pressed rmly againstit by the pressure lever. Motion being communicated to the bed thepattern is caused to turn and draw the strip between itself and the bed;by which means the strip is wound around the pattern and caused by itsyielding, to conform to the irregularities of its surface. After thestrip is wound around the pattern, its opposite end is attached to thepattern to retain it in place. The pattern'is then removed by drawing itfrom the frame, and another substituted; or another stripv is attachedto the same pattern and the operation of bending it repeated as before.

It will be seen that in arranging a revolving pattern, in a yieldingframe, to which pressure is applied, the surface of an irregular patternas it is turned is caused to press at all oints on the strip by whichmeans the strlp is bent so as to conform to the irregular curves of thepattern.

We do not confine ourselves to the construction or arrangement of theparts as described7 as the pattern instead of bein connected to aturning frame may be pivoted to the yielding slides of that frame; andinstead of a pressure lever being used springs acting on the slides maybe substituted therefor, and the bed instead of sliding may be made torevolve.

Having thus described our improvements in Wood bending machines, What Weclaim as new and desire to secure by Letters Patent 1sl. The combinationof a revolving yielding pressure pattern, With an unyielding slidingbed, arranged substantially as described for the purpose as set forth.

2. JAttaching the pattern to the frame substantially as described, sothat it can be removed by simply drawing it out, without unloading anybolts.

In testimony whereof We have subscribed our names.

FREDERICK SEIDLE. SAMUEL EBERLY. Vitnesses B. C. PAINTER, JOSEPH LEAs.

